Method of using cannula with associated filter during cardiac surgery
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United States of America Patent
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Nov 9, 1999
Issued Date -
N/A
app pub date -
Nov 14, 1997
filing date -
Nov 7, 1995
priority date (Note) -
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Abstract
Devices and methods for filtering blood. The devices generally comprise: a mesh for filtering blood flowing within a blood vessel, particularly within an artery such as the aorta; a structure adapted to open and close the mesh within the blood vessel; and a means to actuate the structure. The methods generally include the following steps: introducing a mesh into a blood vessel to entrap embolic material; adjusting the mesh, if necessary, during the course of filtration; and removing the mesh and the entrapped foreign matter from the blood vessel. Additionally, visualization techniques are used to ensure effective filtration.
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